PHP | Imagick affineTransformImage() Function

The Imagick::affineTransformImage() function is an inbuilt function in PHP which is used to transform an image as dictated by the affine matrix.

Syntax:

bool Imagick::affineTransformImage( $matrix )

Parameters: This function accepts single parameter $matrix which holds the value of affine matrix either based on rotate, sheer, scale, etc, …

Return Value: This function returns True on success and FALSE on failure.

Below program illustrates the Imagick::affineTransformImage() function in PHP:

Program: This program uses Imagick::affineTransformImage() function to transforms an image by affine given affine matrix.

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<?php
  
// Create an Imagick object
$imagick = new \Imagick(
  
// Create an ImagickDraw object
$imagickDraw = new \ImagickDraw();
  
// Set the angle
$theta = "35";
    
// Create affine transformation matrix
$affineRotate = array (
    "sx" => cos($theta), "sy" => cos($theta),
    "rx" => sin($theta), "ry" => -sin($theta),
    "tx" => 0, "ty" => 0,
);
     
// Use affine() function
$imagickDraw->affine($affineRotate);
  
// Set the image format
$imagick->setImageFormat("png");
  
// Use affineImageFormat() function
$imagick->affineTransformImage($imagickDraw);
    
header("Content-Type: image/png");
  
// Display the output image
echo $imagick->getImageBlob();
       
?>

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Output:
affineTransformImage() function

Reference: https://www.php.net/manual/en/imagick.affinetransformimage.php



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